US Patent 7942554 Lighting device with adjustable spotlight beam

A lighting device has a light source, a first magnifier lens, a second magnifier lens, and an adjusting mechanism. The light source generates a light beam. The first magnifier lens is disposed in a path of the light beam. The second magnifier lens is disposed in the path of the light beam. The adjusting mechanism includes first and second male members and first and second sleeve members. The first sleeve member is associated with the first male member and the first magnifier lens. The second sleeve member is associated with the second male member and the second magnifier lens.